class_docstr: Base class for TurntableCamera and ArcballCamera
code: def __init__(self, fov=0.0, **kwargs):
      super(Base3DRotationCamera, self).__init__(fov=fov, **kwargs)
      self._actual_distance = 0.0
      self._event_value = None
  
imports: from __future__ import division
  import math
  import numpy
  from .base_camera import BaseCamera
  from ...util import keys, transforms
  from ...visuals.transforms import MatrixTransform
label_desc: Use image node_id 1 to create a new Base3DRotationCamera object from inherited base classes: PerspectiveCamera with example: obj = Base3DRotationCamera(fov)